#include<stdio.h>
void main()
{
    int k1,k2,x,y;
    k1=k2=10;
    x = k1++;
    y = ++k2;
    printf("k1=%d,k2=%d,x=%d,y=%d\n",k1,k2,x,y);
    k1=k2=10;
    x = k1--;
    y = --k2;
    printf("k1=%d,k2=%d,x=%d,y=%d\n",k1,k2,x,y);
}